sentinel.json is a GeoJSON variant of the original GeoRSS file at
http://sentinel.ga.gov.au/RSS/sentinelrss.xml

The original GeoRSS file and data is

© Commonwealth of Australia (Geoscience Australia) 2013.
Licensed under a Creative Commons Attribution 3.0 Australia licence.
http://creativecommons.org/licenses/by/3.0/au/deed.en

This derived GeoJSON file provides the attribution "Based on Geoscience Australia material"

GA_Gazetteer_2010_OSM_Schema.osm.xz
This file is derived from Geoscience Australia Gazetteer 2010 data.
It has been translated into a .osm format and into the OSM schema
using the tool at https://gist.github.com/andrewharvey/1876009